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Biocatalytical synthesis and monolayer studies of multiple hydroxylated wax esters
Author(s) -
Lokotsch Wolfram,
Lang Siegmund,
Möbius Dietmar,
Wagner Fritz
Publication year - 1996
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02523510
Subject(s) - wax , monolayer , transesterification , chemistry , wax ester , substrate (aquarium) , yield (engineering) , organic chemistry , solubility , chemical engineering , catalysis , materials science , composite material , biochemistry , oceanography , engineering , geology
The continuous production of aleuritic acid decyl ester has been investigated with Lipozyme TM as biocatalyst in a fixed‐bed reactor. To avoid the limiting effects of mean substrate solubility, the direct synthesis without organic solvents was chosen, whereby a yield of 90% was obtained depending on the residence time. A comparison of different reaction paths to synthesize a centrally dihydroxylated decyl ester indicated a preference for transesterification of the methyl ester. Under external compression, the interfacial behavior of several enzymatically produced hydroxy wax esters was determined with a Langmuir film balance to find a structure/efficiency relationship. Brewster‐angle microscopy allowed direct visualization of a wax ester monolayer at the air/water interface.